GB/T 14992 GH4169 Inconel 718 Tube Nickel Based Alloy Seamless Pipe For High Temperature
GB/T 14992 GH4169 GH4133 GH3030 GH3039 GH3044 Nickel-Based Alloy Seamless Pipe for High Temperature
Material
Nickel-based alloys are renowned for their exceptional performance in high-temperature environments. These alloys, such as GH4169, GH4133, GH3030, GH3039, and GH3044, are specifically designed to withstand extreme conditions, making them ideal for seamless pipes used in high-temperature applications.
Specification
Nickel-based alloy seamless pipes are manufactured according to the GB/T 14992 standard, which ensures high quality and reliability. These pipes are available in various sizes and thicknesses to meet diverse industrial requirements.
Key Features
- High Temperature Resistance: Capable of maintaining strength and stability at elevated temperatures.
- Corrosion Resistance: Excellent resistance to oxidation and corrosion, even in harsh environments.
- Durability: Long-lasting performance with minimal maintenance.
- Versatility: Suitable for a wide range of applications, including aerospace, power generation, and chemical processing.
Chemical Composition
The chemical composition of these nickel-based alloys is crucial for their performance. Below is a table presenting the typical chemical composition for each alloy:
| Element | GH4169 (%) | GH4133 (%) | GH3030 (%) | GH3039 (%) | GH3044 (%) |
|---|---|---|---|---|---|
| Nickel (Ni) | 50-55 | 70-75 | 76-80 | 70-75 | 70-75 |
| Chromium (Cr) | 17-21 | 12-16 | 14-18 | 18-22 | 18-22 |
| Molybdenum (Mo) | 2.8-3.3 | 2.5-3.5 | - | - | - |
| Iron (Fe) | 5-10 | 5-10 | 5-10 | 5-10 | 5-10 |
| Others | C, Mn, Si, etc. | C, Mn, Si, etc. | C, Mn, Si, etc. | C, Mn, Si, etc. | C, Mn, Si, etc. |
Mechanical Properties
The mechanical properties of these alloys are tailored to meet the demands of high-temperature applications. The table below summarizes the typical mechanical properties:
| Property | GH4169 | GH4133 | GH3030 | GH3039 | GH3044 |
|---|---|---|---|---|---|
| Tensile Strength (MPa) | 1000-1200 | 900-1100 | 800-1000 | 850-1050 | 850-1050 |
| Yield Strength (MPa) | 600-800 | 500-700 | 400-600 | 450-650 | 450-650 |
| Elongation (%) | 15-25 | 20-30 | 25-35 | 20-30 | 20-30 |
| Hardness (HB) | 250-300 | 200-250 | 180-230 | 200-250 | 200-250 |
Steel Grade
The steel grades GH4169, GH4133, GH3030, GH3039, and GH3044 are specifically engineered for high-temperature applications, offering a balance of strength, durability, and resistance to environmental degradation.
Application
These nickel-based alloy seamless pipes are widely used in industries such as:
- Aerospace: For components exposed to high temperatures and pressures.
- Power Generation: In turbines and other high-temperature equipment.
- Chemical Processing: Where resistance to corrosive substances is essential.
- Oil and Gas: In high-temperature and high-pressure environments.
Possible Alternative Grades
While the specified grades offer excellent performance, alternative grades may be considered based on specific application requirements:
- Inconel 718: Known for its high strength and corrosion resistance.
- Hastelloy X: Offers excellent oxidation resistance and high-temperature strength.
- Nimonic 80A: Suitable for high-temperature applications with good creep resistance.
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